Remix of leefla's Sterilite 20QT dry box spool rack. The rack mounts have been modified slightly to create more clearance for silica gel trays and utilize more of internal space in the box.

The rack employs 5/16 steel round bar stock purchased from my local home improvement store and cut to size (325mm).

Silca Gel Tray: https://makerworld.com/en/models/147649#profileId-161088

Xiaomi Sensor Lid Mount: https://makerworld.com/en/models/139854#profileId-152441